Electric lifting device

An electric lifting device, comprising:

• a base;
• a support column;
• a sliding frame;
• a lifting arm;
• an auxiliary frame;
• a transmission assembly;
• and
• a driving assembly;
• wherein the support column is configured to be hollow, and is vertically mounted on the base;
• a side of the support column is provided with a sliding groove extending along a length direction of the support column;
• and the sliding groove communicates with an interior of the support column;
• the sliding frame is configured to be partially embedded within the sliding groove and extend into the interior of the support column;
• and the sliding frame is configured to slide along the sliding groove;
• the lifting arm is mounted to the sliding frame;
• the auxiliary frame is mounted on the sliding frame, and is arranged parallel to the support column;
• the auxiliary frame is provided with a plurality of hanging pins;
• and the plurality of hanging pins are extendable;
• the transmission assembly is provided at the support column;
• and
• the driving assembly is provided on a side of the support column away from the lifting arm, and is configured to drive the sliding frame to slide through the transmission assembly.